src/Pure/Isar/local_theory.ML
author wenzelm
Tue Dec 05 22:14:42 2006 +0100 (2006-12-05)
changeset 21658 5e31241e1e3c
parent 21614 89105c15b436
child 21664 dd4e89123359
permissions -rw-r--r--
Attrib.internal: morphism;
     1 (*  Title:      Pure/Isar/local_theory.ML
     2     ID:         $Id$
     3     Author:     Makarius
     4 
     5 Local theory operations, with abstract target context.
     6 *)
     7 
     8 type local_theory = Proof.context;
     9 
    10 signature LOCAL_THEORY =
    11 sig
    12   type operations
    13   val target_of: local_theory -> Proof.context
    14   val raw_theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory
    15   val raw_theory: (theory -> theory) -> local_theory -> local_theory
    16   val full_name: local_theory -> bstring -> string
    17   val theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory
    18   val theory: (theory -> theory) -> local_theory -> local_theory
    19   val target_result: (Proof.context -> 'a * Proof.context) -> local_theory -> 'a * local_theory
    20   val target: (Proof.context -> Proof.context) -> local_theory -> local_theory
    21   val assert: local_theory -> local_theory
    22   val pretty: local_theory -> Pretty.T list
    23   val consts: (string * typ -> bool) ->
    24     ((bstring * typ) * mixfix) list -> local_theory -> (term * thm) list * local_theory
    25   val axioms: string -> ((bstring * Attrib.src list) * term list) list -> local_theory ->
    26     (bstring * thm list) list * local_theory
    27   val defs: string -> ((bstring * mixfix) * ((bstring * Attrib.src list) * term)) list ->
    28     local_theory -> (term * (bstring * thm)) list * local_theory
    29   val notes: string -> ((bstring * Attrib.src list) * (thm list * Attrib.src list) list) list ->
    30     local_theory -> (bstring * thm list) list * local_theory
    31   val type_syntax: (morphism -> Context.generic -> Context.generic) -> local_theory -> local_theory
    32   val term_syntax: (morphism -> Context.generic -> Context.generic) -> local_theory -> local_theory
    33   val declaration: (morphism -> Context.generic -> Context.generic) -> local_theory -> local_theory
    34   val def: string -> (bstring * mixfix) * ((bstring * Attrib.src list) * term) ->
    35     local_theory -> (term * (bstring * thm)) * local_theory
    36   val note: string -> (bstring * Attrib.src list) * thm list ->
    37     local_theory -> (bstring * thm list) * Proof.context
    38   val notation: Syntax.mode -> (term * mixfix) list -> local_theory -> local_theory
    39   val abbrevs: Syntax.mode -> ((bstring * mixfix) * term) list -> local_theory -> local_theory
    40   val target_morphism: local_theory -> morphism
    41   val target_name: local_theory -> bstring -> string
    42   val init: string -> operations -> Proof.context -> local_theory
    43   val restore: local_theory -> local_theory
    44   val reinit: local_theory -> theory -> local_theory
    45   val exit: local_theory -> Proof.context
    46 end;
    47 
    48 structure LocalTheory: LOCAL_THEORY =
    49 struct
    50 
    51 (** local theory data **)
    52 
    53 (* type lthy *)
    54 
    55 type operations =
    56  {pretty: local_theory -> Pretty.T list,
    57   consts: (string * typ -> bool) -> ((bstring * typ) * mixfix) list -> local_theory ->
    58     (term * thm) list * local_theory,
    59   axioms: string -> ((bstring * Attrib.src list) * term list) list -> local_theory ->
    60     (bstring * thm list) list * local_theory,
    61   defs: string -> ((bstring * mixfix) * ((bstring * Attrib.src list) * term)) list ->
    62     local_theory -> (term * (bstring * thm)) list * local_theory,
    63   notes: string ->
    64     ((bstring * Attrib.src list) * (thm list * Attrib.src list) list) list ->
    65     local_theory -> (bstring * thm list) list * local_theory,
    66   type_syntax: (morphism -> Context.generic -> Context.generic) -> local_theory -> local_theory,
    67   term_syntax: (morphism -> Context.generic -> Context.generic) -> local_theory -> local_theory,
    68   declaration: (morphism -> Context.generic -> Context.generic) -> local_theory -> local_theory,
    69   target_morphism: local_theory -> morphism,
    70   target_name: local_theory -> bstring -> string,
    71   reinit: local_theory -> theory -> local_theory,
    72   exit: local_theory -> Proof.context};
    73 
    74 datatype lthy = LThy of
    75  {theory_prefix: string,
    76   operations: operations,
    77   target: Proof.context};
    78 
    79 fun make_lthy (theory_prefix, operations, target) =
    80   LThy {theory_prefix = theory_prefix, operations = operations, target = target};
    81 
    82 
    83 (* context data *)
    84 
    85 structure Data = ProofDataFun
    86 (
    87   val name = "Pure/local_theory";
    88   type T = lthy option;
    89   fun init _ = NONE;
    90   fun print _ _ = ();
    91 );
    92 val _ = Context.add_setup Data.init;
    93 
    94 fun get_lthy lthy =
    95   (case Data.get lthy of
    96     NONE => error "No local theory context"
    97   | SOME (LThy data) => data);
    98 
    99 fun map_lthy f lthy =
   100   let val {theory_prefix, operations, target} = get_lthy lthy
   101   in Data.put (SOME (make_lthy (f (theory_prefix, operations, target)))) lthy end;
   102 
   103 val target_of = #target o get_lthy;
   104 val assert = tap target_of;
   105 
   106 fun map_target f = map_lthy (fn (theory_prefix, operations, target) =>
   107   (theory_prefix, operations, f target));
   108 
   109 
   110 (* substructure mappings *)
   111 
   112 fun raw_theory_result f lthy =
   113   let
   114     val (res, thy') = f (ProofContext.theory_of lthy);
   115     val lthy' = lthy
   116       |> map_target (ProofContext.transfer thy')
   117       |> ProofContext.transfer thy';
   118   in (res, lthy') end;
   119 
   120 fun raw_theory f = #2 o raw_theory_result (f #> pair ());
   121 
   122 fun full_name lthy =
   123   let
   124     val naming = Sign.naming_of (ProofContext.theory_of lthy)
   125       |> NameSpace.sticky_prefix (#theory_prefix (get_lthy lthy))
   126       |> NameSpace.qualified_names;
   127   in NameSpace.full naming end;  
   128 
   129 fun theory_result f lthy = lthy |> raw_theory_result (fn thy => thy
   130   |> Sign.sticky_prefix (#theory_prefix (get_lthy lthy))
   131   |> Sign.qualified_names
   132   |> f
   133   ||> Sign.restore_naming thy);
   134 
   135 fun theory f = #2 o theory_result (f #> pair ());
   136 
   137 fun target_result f lthy =
   138   let
   139     val (res, ctxt') = f (#target (get_lthy lthy));
   140     val thy' = ProofContext.theory_of ctxt';
   141     val lthy' = lthy
   142       |> map_target (K ctxt')
   143       |> ProofContext.transfer thy';
   144   in (res, lthy') end;
   145 
   146 fun target f = #2 o target_result (f #> pair ());
   147 
   148 
   149 (* primitive operations *)
   150 
   151 fun operation f lthy = f (#operations (get_lthy lthy)) lthy;
   152 fun operation1 f x = operation (fn ops => f ops x);
   153 fun operation2 f x y = operation (fn ops => f ops x y);
   154 
   155 val pretty = operation #pretty;
   156 val consts = operation2 #consts;
   157 val axioms = operation2 #axioms;
   158 val defs = operation2 #defs;
   159 val notes = operation2 #notes;
   160 val type_syntax = operation1 #type_syntax;
   161 val term_syntax = operation1 #term_syntax;
   162 val declaration = operation1 #declaration;
   163 val target_morphism = operation #target_morphism;
   164 val target_name = operation #target_name;
   165 
   166 
   167 (* derived operations *)
   168 
   169 fun def kind arg lthy = lthy |> defs kind [arg] |>> hd;
   170 
   171 fun note kind (a, ths) lthy = lthy |> notes kind [(a, [(ths, [])])] |>> hd;
   172 
   173 fun notation mode args = term_syntax (fn phi =>
   174   let val args' = args |> map (fn (t, mx) => (Morphism.term phi t, mx))
   175   in Context.mapping (Sign.add_notation mode args') (ProofContext.add_notation mode args') end);
   176 
   177 fun abbrevs mode args = term_syntax (fn phi =>
   178   let val args' = args |> map (fn ((c, mx), t) => ((Morphism.name phi c, mx), Morphism.term phi t))
   179   in
   180     Context.mapping
   181       (snd o Sign.add_abbrevs mode args') (snd o ProofContext.add_abbrevs mode args')
   182   end);
   183 
   184 
   185 (* init -- exit *)
   186 
   187 fun init theory_prefix operations target = target |> Data.map
   188   (fn NONE => SOME (make_lthy (theory_prefix, operations, target))
   189     | SOME _ => error "Local theory already initialized");
   190 
   191 fun restore lthy =
   192   let val {theory_prefix, operations, target} = get_lthy lthy
   193   in init theory_prefix operations target end;
   194 
   195 val reinit = operation #reinit;
   196 val exit = operation #exit;
   197 
   198 end;